Originally posted by Cecil
Yes. It is usually a good idea to replace the set:
Front, Rear and Chain.
Try a different combo...
This really change the dynamic of the bike.
I went from a 17 / 40 combo to a 16 / 40 combo... pretty decent wheelie increase.
Going to a 16 / 42... anticipating lots more wheelie-ability.
However, the top-end will suffer.
You notice a big increase over going one tooth down on the front sprocket? My bike is 16/40 stock and I'm about to break down and go 15/40 when I put some new tires on. Totally worth it, right?